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<div class="title">Extensions to the Peripheral Section<div class="ingroups"><a class="el" href="group__svd___format__1__1__gr.html">SVD Extension in Version 1.1</a></div></div>  </div>
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<p>The following elements have been added to the peripheral section. All new elements are optional but are highly recommended to enable the generation of consistent and CMSIS-compliant device header files from SVD descriptions.</p>
<table  class="cmtable" summary="Peripheral Section Extension Elements">
<tr>
<th nowrap="nowrap">Element Name </th><th>Description </th><th>Type </th><th>Occurrence  </th></tr>
<tr>
<td>alternatePeripheral </td><td>All address blocks in the memory space of a device are assigned to a unique peripheral by default. If there are multiple peripherals describing the same address blocks, this needs to be specified explicitly. A peripheral redefining an address block needs to specify the name of the peripheral that is listed first in the description. If no alternate peripheral is specified, then the <em>SVDConv</em> utility will generate errors. </td><td>identifierType  </td><td>0..1   </td></tr>
<tr>
<td>headerStructName </td><td>The header file generator uses the name of a peripheral as the base name for the C structure type. If this element is specfied, then this string is used instead of the peripheral name. This is particularly useful when multiple peripherals get derived from a peripheral description and a generic type name shall be used. </td><td>identifierType  </td><td>0..1   </td></tr>
</table>
<h1><a class="anchor" id="periperalSectionExtensions_ex"></a>
Example:</h1>
<div class="fragment"><div class="line">&lt;peripheral&gt;</div>
<div class="line">  &lt;name&gt;Timer1&lt;/name&gt;</div>
<div class="line">  &lt;version&gt;1.0&lt;/version&gt;</div>
<div class="line">  &lt;description&gt;Timer 1 is a standard timer ... &lt;/description&gt;</div>
<div class="line">  &lt;baseAddress&gt;0x40002000&lt;/baseAddress&gt;</div>
<div class="line">  ...</div>
<div class="line">&lt;/peripheral&gt;</div>
<div class="line">&lt;peripheral&gt;</div>
<div class="line">  &lt;name&gt;Timer1_Alt&lt;/name&gt;</div>
<div class="line">  &lt;version&gt;1.0&lt;/version&gt;</div>
<div class="line">  &lt;description&gt;Alternate Timer 1 is a special timer execution mode ... &lt;/description&gt;</div>
<div class="line">  &lt;baseAddress&gt;0x40002000&lt;/baseAddress&gt;</div>
<div class="line">  &lt;alternatePeripheral&gt;Timer1&lt;/alternatePeripheral&gt;</div>
<div class="line">  ...</div>
<div class="line">&lt;/peripheral&gt;</div>
</div><!-- fragment --><p>Two timer peripheral descriptions are specified for the same memory block. No redefined addresses will be reported for both peripherals. </p>
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    <li class="footer">Generated on Tue Feb 18 2014 08:41:45 for CMSIS-SVD by ARM Ltd. All rights reserved.
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